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Re: Some may remember I bought a pair of Bev 3

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Duke

(D)

In Reply to: Some may remember I bought a pair of Bev 3 posted by audiogatorjim on December 5, 2006 at 18:55:33:

If you make your room dead, that will decrease the relative high frequency balance.
You might consider diffusion instead of absorption. This addresses issues such as slap echo and image skewing while preserving the high frequency energy in the reverberant field.
You might want to try a relatively inexpensive supertweeter (Fostex FT17H for example) before forking over the big bucks for a ribbon.
Duke

Follow Ups:

I respectfully disagree, Duke - David Yost 06:25:51 12/06/06 (12)
I think that adding tweeters of any stripe to the wonderful "mostly" full-range Beveridge electrostatic line sources would be a travesty and very hard or impossible to pull off with any real improvement. If anything, in this situation, I would consider using tone controls or gentle EQ to pick up the top end. There was an outboard EQ module available for the System 3 and one came up on ebay several weeks ago.
I do think you are right about adding diffusion instead of absorption, and considering the dispersion of these speakers, absorption on the floor and ceiling wouldn't do much anyway.
BTW, Harold Beveridge designed these to be used in a reflective environment, and his white paper on the Beveridge site talks about this at some length.
David
- Re: I respectfully disagree, too. - Duke 10:06:41 12/06/06 (4)
  I agree that adding a supertweeter is a long shot, though I'm not sure it's doomed. That's why I suggested trying an inexpensive one first, so he could see if it's a step in the right direction or not.
  I didn't realize that EQ modules were made for the Beveridge, and agree that would be the more ideal approach.
  Duke
  - You da man! - David Yost 10:48:34 12/06/06 (3)
    I wouldn't even know how to begin to mate a point source tweeter to a 6' full range line source. Perhaps the way VMPS does it with the Elixir works well...never heard them, but they won Best of Show at a recent CES. In this design, the tweeter is mounted on top of the line and angled downward towards the listener. Any other approach would put the tweeter to the side of the line or in front of part of it, ruining the coherent wavefront the Beveridge lens generates.
    Best wishes,
    David
    - Re: You da man! - Brian Walsh 19:39:32 12/06/06 (0)
      FWIW one of my customers had the RM/X Elixirs for a little while. He's now using Martin Logan Summits. Not my cuppa tea; he described them as definitely better than the Elixirs, though, and I agree.
      
      Best regards,
    - Re: You da man! - Duke 11:50:09 12/06/06 (1)
      Well, I'll tell you what I would try.
      I would point the supertweeter away from the listening area. I would have it only contribute to the reverberant field, so that the first-arrival wavefront stays coherent. This would hopefully address the tonal balance issue without introducing new problems.
      If you try to incorporate a supertweeter in a front-firing configuration, you can end up hearing a duet on solo strings - that is, you can hear that the high overtones are coming from a different source than the rest of the instrument. It's a small thing, but for me it ruins the illusion. It's like a tiny little man with a tiny violin accompanying the soloist.
      I used this reverberant-field-only supertweeter technique with original Quads, but not yet with a wide pattern line source like the Beveridges. The situation is different so I'm not sure it would work - but it's what I'd try.
      Duke
      - Excellent suggestion! - David Yost 13:18:31 12/06/06 (0)
        
        In Reply to: Re: You da man! posted by Duke on December 6, 2006 at 11:50:09:
        
        The duet-solo thing would be the problem...the indirect approach could be the best way, and certainly make the crossover much easier to deal with.
        Best wishes,
        David
- Further info... - David Yost 06:36:55 12/06/06 (6)
  Here is the link to the Bev EQ I mentioned. The seller describes it as a crossover, but I think it really is a hf shelving control.
  - http://cgi.ebay.com/BEVERIDGE-ELECTROSTATIC-SPEAKER-SUB-WOOFER-CROSSOVER_W0QQitemZ160052113310QQihZ006QQcategoryZ3284QQssPageNameZWDVWQQrdZ1QQcmdZViewItem (Open in New Window)
  - Re: I like the EQ idea better after looking...... - deafbykhorns 16:49:44 12/07/06 (2)
    at the build quality of the BEV xover.
    - Agree John. I wish I had won that Bev 3 EQ on ebay. - audiogatorjim 19:13:15 12/07/06 (1)
      I emailed the winner and he said he was using it for speakers other than Bev's. If I only had one, you easily reverse engineer it......
      - Re: we can reverse engineer, did you see the values... - deafbykhorns 13:27:02 12/08/06 (0)
        
        In Reply to: Agree John. I wish I had won that Bev 3 EQ on ebay. posted by audiogatorjim on December 7, 2006 at 19:13:15:
        
        posted in auction? Its only 6db based on the # of components.
  - I actually bid on that but was beat by $1.00. I had no - audiogatorjim 19:29:54 12/06/06 (2)
    idea anyone else would be interested.
    - Am I right... - David Yost 05:03:30 12/07/06 (1)
      ...in describing this thing as a hf shelving/tilt control? Do you own Beveridge 2s by any chance or know where I can get some good used transducers for them? I would like to have some spares.
      Thanks,
      David
      - Re: Am I right... - audiogatorjim 19:11:24 12/07/06 (0)
        
        In Reply to: Am I right... posted by David Yost on December 7, 2006 at 05:03:30:
        
        I think that is how it would be described. No, I have the Bev 3's. I saw a pair of 2's on ebay a few months back. I think they sold BIN for about $1500.
        You might contact Rick Beveridge, who actually returns emails.

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